ols Help Book Chapter 28. x Chapter 28 Quest... Q 4 16 Bool TT 28.16 A well-mixed open pond contains wastewater that is contaminated with a dilute concentration of dissolved methylene Air flow V=7.5 m/s Pond surface L₂ = 100 m 4₁ = 500 m chloride. The pool is rectangular with dimensions of 500 m by 100 m. Air 27°C at and 1.0 atm blows parallel to the surface of the pond as shown in the figure with a velocity of 7.5 m/s. At 20°C and 1.0 atm, the diffusion coefficient of methylene chloride in air DAB = 0.085 cm²/s and the kinematic viscosity of the air VB = 0.15 cm²/s. (a) At what position across the pond is the air no longer laminar? (b) Determine the mean gas-film mass-transfer coefficient associated with the transfer of methylene chloride. (c) What is the Schmidt number for methylene cholride in the liquid phase if at 20°C the diffusion coefficient of methy- lene chloride in water is 1.07 x 105 cm²/s and the kine- matic viscosity of water is 0.010 cm²/s?